The invention discloses a classified treatment type waste engine oil
recovery device. The device comprises a heavily-polluted waste engine
oil storage chamber, a light-polluted waste engine
oil storage chamber, an acidification chamber, a concentrated
sulfuric acid delivery
pipe, stirring rods, conveying belts, filter plates,
brush heads, hydraulic cylinders, residue
discharge ports, waste residuerecovery boxes, an alkalization chamber, a
lime solution delivery
pipe, an activated clay purification chamber and a
dehydration chamber, wherein the heavily-polluted waste engine
oil storage chamberis connected with the top end of the acidification chamber; the upper right end of the acidification chamber is connected with the concentrated
sulfuric acid delivery
pipe. Compared with the prior art, the classified treatment type waste engine oil
recovery device has the beneficial effects as follows: waste engine
oil can be divided into heavily-polluted waste engine oil and light-polluted wasteengine oil and is recovered in a classified manner, so that not only is the
recovery quality of the waste engine oil guaranteed, but also the recovery cost of the waste engine oil is reduced, besides, the device is further equipped with a waste residue cleaning device, waste residues produced during recovering of the waste engine
oil can be cleaned automatically, and the device is quite convenient.